Twin-rivet-setting machine



Oct. 29, 1929. w. E. BARTEL TWIN RIVET SETTING MACHINE s Shets-Sh'laet Filed March 26, 1928 Oct. 29, 1929. w. E. BARTE L TWIN RIVET SETTING MACHINE Filed March 26. 1928 3 Sheets-Sheet 2 fiZven/tor'" I wiZZiwwEDarCeL.

Oct. 29, 1929. w. E. .BARTEL 1,733,713

TWIN RIVET SETTING MACHINE Filed March 26, 1928 3 Sheets-Sheet 3 will/71117135517682? Patented Oct. 29, 1929 UNITED STATES WILLIAM E. IBARTEL, OF WALTHAM, MASSACHUSETTS, ASSIGNOR TO JUDSON L. THOM- PATENT "OFFICE,

SON MANUFACTURING 00., or WALTHAM, MASSACHUSETTS; A CORPORATION or MASSACHUSETTS 'rwrn-nivnr-snrrme MACHINE I Application filed March 26, 1928. Serial No. 264,643.

This invention relates to a machine for setting rivets, the object of the invention being to provide a machine that will set two rivets at the same time. I y I The invention relates particularly to the mechanism which feeds the rivets into position so that two reciprocatoryplungers or drivers may settwo of, the rivets at the same time. The rivets are fed by the improved feeding device from a primary raceway alternately totwo secondary raceways located upon opposite sides of the primary raceway.

The invention consists-in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawings I Figure 1 is a'front elevation of a twin rivet setting machine embodying my invention, thesame being broken away to save space. p

Fig. 2 is aleft hand side elevation of the same also broken away. s

Fig. 3 is a sectional elevation taken on line 3--3 of Fig. 1, illustrating one of the drivers and a portion of one of the rivet carriers, together with one of the secondary .raceways andthe primary raceway.

Fig. 4 is a sectional elevation taken on line 4-4 of Fig. 1. I

Fig. 5 is a plan view of the rivet feeding slide. U

Fig. 6 is a detail sectional elevation viewed from the front of the machine illustrating the rivet feed slide positioned in azportion of the frame of the machine.

Like numerals refer to like parts through- I out the several views of the drawings.

In the drawings, 10 is the frame of the machine. 11 is the rivet hopper which is operated in a manner Well known to those skilled in the art, to feed rivets to a primary 7 raceway 12. The rivets pass down the raceway 12 until they arrive at a rivet carrier slide 13. The rivet carrier slide .13 has a flange 14 extending laterally therefrom along its lower edge. Thisfiange is slotted vto form T-shaped slots 15 and 16. The shank of the rivet, when it is positioned uponthe slide 13, projects into the narrow portion 17 of, the. slot 15, or into the narrow portion 18 of the slot 16, while thehead projects into the enlarged portion 19 ofthe slot 15 or into the enlarged portion 20 of the slot 16.

lVhen the rivet has passed down the pri- Y inary' raceway 12 to the bottom thereof, it

drops into one of the slots 15 or 16,'according to the position of the slide13. As illustrated in the drawings, Fig. 1, the] rivet which is about to be fed toward the left, Fig.

1, is shown as resting in the T-shaped slot 15.

The slide 13 has a reciprocatory motion imparted thereto by a, lever 21, pivoted at 22 to the frame of the machine and having a pin 23 fast theretoand projecting laterally therefrom into a slot 24 provided in the carrier slide 13. A rocking motion is imparted to the lever 21 by another lever25 and'by a spring 26 which connects the lever 25 to an arm 27 on the lever 21, the, spring being connected to the arm 27 by a pin 28 and to the lever 25 by a pin 29. The lever 25 is pivoted at 30 to the frame. of the machine and its upper end has an inclined edge 31 thereon whichbears againsta friction roll 32 rotatably mounted on a block 33 the friction roll 32 thus constitutinga contact mem-' her. A spring 34 holds the inclined edge 31 of the lever 25 against the friction roll The block 33 is fastened toa rod 35 which extends through the outer end of a lever 36 pivoted at 37 to'the frame of the machine and to which a rocking motion is imparted by a crank, not shown in the draw lngs.

ceive the upper ends of plungers 40 and 41, through which the rod 35 projects. The plungers are alike, and the plunger 40 is illustrated in detail in Fig. 3, said plunger ported upon an arm 46 forming a portion of the frame of the machine. The rivet carrier The lever 36 is slotted at 38 and 39 to re 44 consists of two fingers 47 and 148 which are supported by spring-actuated members 49 and 50 upon a slide 51. The slide 51 thereto by alink 54swhich isconnected by a pin 55 at itsjlower end to a block 56 which is fastened to the rod 35. The upper end of the link 54 is pivotally connected to a; rocker, arm- 57upon which is pivotally mounted a pawl 58 which actuates a ratchet 59 fast'to a shaft 60, towhich the rotary member of the hopper 11 is fastened, this rotary member of the hopper being well known to those skilled in the art, bu't not 'shown in the drawings. I

. The general operation or the mechanism hereinbefore specifically described is as follows :Assuming a rivet 61 to be positioned in the carrier 44: and another rivet 62 to be positioned in the carrier 53, the plungers e0 and 41 will be moved downwardly engaging the rivets 61 and 62 and moving them downwardly, together with their carriers 44 and 53, until the rivets pierce apiece of sheet material 63 shown in Fig. 1, and are clinched againstthe material by the anvils 45 and 45". During this downward movement ofthe plungers, thelever'25 will be rocked as to rock the lever 21 toward the left Fig.

1, moving the slide 13 from the position illustrated in Figs. 1 and 5 toward the left, until the median line of the slot 15 is brought intoialigmnent with the median line of a secondary raceway 6a, whereupon a rivet 65 carried by the slide 13 will drop out of the slide and slide down the secondary raceway es until'it engages the right hand edge 65 of the plunger 4th The plunger at this time having moved downwardly to engage the rivet 61 on the rivet carrier 44.

, I When the rivets have been set, as hereinbefore set forth and the planners moved u 3- 7 it Q wardly, the rivet 65 will drop into the carrier 452 as soon as the lower end of the driver a3 is moved upwardly so as to clear said rivet.

7 On the upward movement of the plungers, the lever 21 will be rocked toward the right moving the slide 13 from its extreme position at the left, 1, to its extreme position at the right, that is, to the position illustrated in 1. This moveinent of the slide 18 will carry another rivet from the primary raceway to another secondary raceway 67, the last-named rivet l iavingdropped into the slot 16 when the median line of the slot 16 was brought into alignmentwith the median line oi the p rimary raceway and that occurredwhen 'thefmedian line of the slot 15 was brought into alignment with the median line of the secondary raceway 64.

priinary' raceway to the secondary raceway 67, the plunger 40 is in its uppermost position and the rivet will therefore slide down the secondary raceway 67 and drop into its pocket 53, thus the rivets will be alternately fed by the slide 13 from the primary raceway 12 to the secondary raceways" 64 and 67 and will be simultaneously driven and clinched by the plungers so and a1.

The distancebetween the median lines of the slots'l5 and 16 is the same as the distance from the median line of the primary raceway 12 to the median line of either of the secondary raceways 64 or 67.

1 claim":

1. A twin rivet setting machine having, in combination, a primary raceway,a stationary frame, a pair of secondary raceways,.a rivet carrier positioned adjacent the lower end of each of said secondary raceways respectively and slidable vertically in said frame, a plunger in ali nment with each of said carriers respectively and slidable vertically in said frame, an anvil in alignment with each of said plungers respectively, mechanism to impart a simultaneous reciprocatory movement to said plungers, and means to feed a rivet to each of said carriers from each of said secondary raceways during one cycle of movements of said plunger-s whereby said carrier may be moved downwardly by said plungers and said rivets driven out of the carriers and clinched against said anvils.

2. A twin rivet setting machine having, in combination, a' primary raceway, a pair of secondary raceways, a rivet carrier positioned adjacent the lower end ot'each of said econdary raceways respectively, a plunger in alignmen with each of said carriers respectively, an anvil in alignment with each of said plungers respectively, mechanism to imparta simultaneous reciprocatory movementto said plungers, a carrier slide extending transversely of said raceway and adapted to simultaneously receive a rivet from said primary raceway and deliver alternately another rivet to either one out said secondary raceways, and mechanism operated by said plunger reciprocating mechanism to impart a reciprocatory movement to said carrier slide. V

'3. A twin rivet setting machine having, in combination, a primary raceway, a pair of secondary raceways, a'rivet carrier positioned adjacentthe lower end of each of said secondary raceways respectively, a plunger in alignment with each ofsaid carriers respectively, an anvil in alignment with each of said plungers resj iectively, mechanism to impart a simultaneous reciprocatory movement to said'plungers, a carrier slideextending transversely of said raceways and adapted to simultaneously receive a rivet from connected to said first-named lever and having an inclined edge thereon, and a contact member connected to said plungers and adapted toengagc said inclined edge, Whereby a reciprocatory movement may be imparted to said carrier slide.

4. A twin rivet setting machine having, in combination, a primary raceway, a pair of secondary raceways, a rivet carrier positioned adjacent the lower end of each of said secondary raceways respectively, a spring connected to each of said rivet carriers and acting to move them upwardly, a plunger in alignment With each of said carriers respecvtively, an anvil in alignment With each of said plungers respectively, mechanism to impart a simultaneous reciprocatory movement to said plungers, whereby a vertical reciprocatory movement may be imparted to said carrier slides, a carrier slide extending transversely of said raceways and adapted to simultaneously receive a rivet from said primary raceway and deliver another rivet to one of said secondary raceWays, and mecha- 'nism operated by said plunger reciprocating mechanism to impart a reciprocatory movement to said carrier slide.

In testimony whereof I have hereunto set my hand.

WILLIAM E. BARTEL. 

